Infante João of Portugal (born 1400)

John, Constable of Portugal

Portuguese prince and Constable of Portugal (1400–1442)

Infante John, Constable of Portugal was a Portuguese infante (prince) of the House of Aviz, Constable of Portugal and master of the Portuguese Order of St. James (Santiago). In Portugal, he is commonly referred to as the O Infante Condestável.